“Will you tell those dumbasses at the Tea Party to stop asking questions about birth certificates while I’m on the camera,” Buck said to the worker while laughing. “God, what am I supposed to do?”

The IRS filing of American Crossroads, an outside 527 group that was conceived by Rove and ex-RNC chair Ed Gillespie, gives a good taste of who is funding the GOP effort to make big gains in the House and Senate come the fall. The group has already burned through $600,000 on ads attacking Senate Majority Leader Harry Reid, who is facing a reelection contest against Republican Sharron Angle (see one of the spots below). Chaired by another ex-RNC chair, Mike Duncan, American Crossroads has pledged to raise $50 million to beat Democrats in the midterms and has been seen by some as a competitor to the Republican National Committee itself.

There are no limits on how much corporations, unions, and individuals can donate to 527 groups.

Those four dudes: Trevor Rees-Jones, president of Dallas-based Chief Oil and Gas $1 million; Bradley Wayne Hughes, chairman of Public Storage Inc, $1.55 million to date; Harold Simmons, owner of Southwest Louisiana Land LLC; Robert Rowling, owner of TRT Holdings, $1 million.